{"id":"CVE-2026-71253","published":"2026-10-19T11:17:18.540","lastModified":"2026-10-19T20:47:17.723","description":"Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Johnzon.\n\n\n\nClassConverter loads & static-initializes an attacker-named class from untrusted JSON.\n\n\n\n\nThis issue affects Apache Johnzon: from 1.0.0 before 2.2.0.\n\n\n\nUsers are recommended to upgrade to version 1.3.1 (javax namespace) or 2.2.0 (jakarta specification namespace), which fixes the issue.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-470"],"vendors":[],"products":[],"references":[{"url":"https://github.com/apache/johnzon/commit/91e7b0d21d08d138944e2570691939739422a3d6","tags":[]},{"url":"https://github.com/apache/johnzon/commit/dd3d00634c746a2173a2518e882e85e8a151bf30","tags":[]},{"url":"https://lists.apache.org/thread.html/3vgm1yo2sn9yhkvvs9lc4ro01vl3zt68","tags":[]}],"exploitRefs":[{"url":"https://github.com/apache/johnzon/commit/91e7b0d21d08d138944e2570691939739422a3d6","tags":[]},{"url":"https://github.com/apache/johnzon/commit/dd3d00634c746a2173a2518e882e85e8a151bf30","tags":[]}],"hasPoc":true,"ai":null}